What is Nostr?
Nostr is a simple, open protocol that enables global, decentralized, and censorship-resistant social media. The protocol is based on simple JSON objects and websocket connections, with standard elliptic-curve cryptography for keys and signing. Like HTTP, Nostr is an open standard upon which anyone can build. Nostr is not an app or service that you sign up for.
What is OstrichGram?
OstrichGram is free, open-source chat software that uses the Nostr protocol and network. It is currently available as a desktop application for Windows and Linux, but may be available on other platforms in the near future. Its primary features include group chats and encrypted direct messages.